您需要的是：
request.getServerName()
一个例子：
<%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%>
![相当于PHP的$ _SERVER [“ HTTP_HOST”]的JSP或JavaScript？](http://www.mshxw.com/aiimages/31/506281.png "相当于PHP的$ _SERVER [“ HTTP_HOST”]的JSP或JavaScript？")
您需要的是：
request.getServerName()
一个例子：
<%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%>
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